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lsluns: point out IBM Storwize configuration requirements

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Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Reviewed-by: Jens Remus <jremus@linux.vnet.ibm.com>
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
This commit is contained in:
Steffen Maier
2017-03-14 14:19:09 +01:00
committed by Michael Holzheu
parent 0daa7ba0b5
commit 5f768dd52d
2 changed files with 16 additions and 0 deletions
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4
zconf/lsluns
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@@ -177,6 +177,10 @@ $PROGRAM_NAME [-c <busid>] ... [-p <wwpn>] ... [-h] [-v]
Discovering LUNs only makes sense for NPIV-enabled FCP devices
without zfcp automatic LUN scan. zfcp automatic LUN scan is available
as of kernel version 2.6.37, if not disabled with zfcp.allow_lun_scan=0.
For storage products that do not support a REPORT LUNS
well-known logical unit (such as IBM Storwize products),
ensure that LUN 0 represents a valid peripheral device type.
See the man page for more information.
$PROGRAM_NAME -a [-c <busid>] ... [-p <wwpn>] ... [-h] [-v]

12
zconf/lsluns.8
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@@ -64,6 +64,18 @@ If not attached already, lsluns temporarily attaches LUN 0
Do not terminate lsluns with a signal. Signals interfere
with the removal of temporarily attached LUNs.
.TP
Storage Products
Some storage products return a peripheral device type of 31==0x1f
with peripheral qualifier 0 in a SCSI standard INQUIRY command
for an unmapped FCP LUN 0. Examples are: IBM Storwize products,
including IBM V7000, IBM V840, IBM V9000, and IBM SAN Volume Controller.
For lsluns to work with such storage products,
you must have a host mapping on the storage, which maps some volume
to exported FCP LUN 0x0000000000000000 (Storwize host map property "SCSI ID" 0)
for each used FCP-device initiator WWPN. The volume can be
a minimum-sized thin-provisioned shared stand-in volume.
.SH OPTIONS
.TP
.BR \-a ", " \-\-active